{"id":1105682,"date":"2025-01-08T16:33:19","date_gmt":"2025-01-08T08:33:19","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/1105682.html"},"modified":"2025-01-08T16:33:21","modified_gmt":"2025-01-08T08:33:21","slug":"python%e4%b8%ad%e5%a6%82%e4%bd%95%e5%8f%aa%e4%bf%9d%e7%95%99%e4%b8%80%e4%bd%8d%e5%b0%8f%e6%95%b0","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/1105682.html","title":{"rendered":"python\u4e2d\u5982\u4f55\u53ea\u4fdd\u7559\u4e00\u4f4d\u5c0f\u6570"},"content":{"rendered":"

\"python\u4e2d\u5982\u4f55\u53ea\u4fdd\u7559\u4e00\u4f4d\u5c0f\u6570\"<\/p>\n

\u5728Python\u4e2d\uff0c\u53ef\u4ee5\u901a\u8fc7\u4f7f\u7528\u591a\u79cd\u65b9\u6cd5\u6765\u53ea\u4fdd\u7559\u4e00\u4f4d\u5c0f\u6570\uff1a\u683c\u5f0f\u5316\u5b57\u7b26\u4e32\u3001round()\u51fd\u6570\u3001decimal\u6a21\u5757\u3002<\/strong> \u5176\u4e2d\uff0c\u683c\u5f0f\u5316\u5b57\u7b26\u4e32\u65b9\u6cd5<\/strong>\u662f\u6700\u5e38\u7528\u548c\u7b80\u5355\u7684\u65b9\u5f0f\u3002\u901a\u8fc7\u4f7f\u7528\u683c\u5f0f\u5316\u5b57\u7b26\u4e32\u65b9\u6cd5\uff0c\u4f60\u53ef\u4ee5\u8f7b\u677e\u5730\u5c06\u4e00\u4e2a\u6d6e\u70b9\u6570\u683c\u5f0f\u5316\u4e3a\u53ea\u4fdd\u7559\u4e00\u4f4d\u5c0f\u6570\u7684\u5b57\u7b26\u4e32\u3002\u5177\u4f53\u505a\u6cd5\u662f\u5728\u5b57\u7b26\u4e32\u4e2d\u4f7f\u7528\u683c\u5f0f\u5316\u8bed\u6cd5\u3002\u4f8b\u5982\uff0c\u4f7f\u7528f-string\u683c\u5f0f\u5316\u5b57\u7b26\u4e32\u7684\u65b9\u6cd5\u5982\u4e0b\uff1aformatted_number = f"{number:.1f}"<\/code>\u3002\u8fd9\u79cd\u65b9\u6cd5\u4e0d\u4ec5\u7b80\u5355\u6613\u7528\uff0c\u800c\u4e14\u80fd\u591f\u5f88\u597d\u5730\u63a7\u5236\u8f93\u51fa\u7684\u683c\u5f0f\uff0c\u9002\u7528\u4e8e\u5927\u591a\u6570\u573a\u666f\u3002<\/p>\n<\/p>\n

\u4e0b\u9762\u6211\u4eec\u5c06\u8be6\u7ec6\u4ecb\u7ecdPython\u4e2d\u5e38\u7528\u7684\u4e09\u79cd\u65b9\u6cd5\uff0c\u4ee5\u5e2e\u52a9\u4f60\u6839\u636e\u5177\u4f53\u9700\u6c42\u9009\u62e9\u5408\u9002\u7684\u65b9\u5f0f\u6765\u4fdd\u7559\u4e00\u4f4d\u5c0f\u6570\u3002<\/p>\n<\/p>\n

\u4e00\u3001\u4f7f\u7528\u683c\u5f0f\u5316\u5b57\u7b26\u4e32<\/h3>\n<\/p>\n

\u683c\u5f0f\u5316\u5b57\u7b26\u4e32\u662fPython\u4e2d\u4e00\u79cd\u5e38\u89c1\u7684\u5b57\u7b26\u4e32\u5904\u7406\u65b9\u5f0f\uff0c\u80fd\u591f\u5e2e\u52a9\u6211\u4eec\u8f7b\u677e\u5730\u63a7\u5236\u6d6e\u70b9\u6570\u7684\u663e\u793a\u7cbe\u5ea6\u3002\u4ee5\u4e0b\u662f\u683c\u5f0f\u5316\u5b57\u7b26\u4e32\u7684\u51e0\u79cd\u5e38\u7528\u65b9\u6cd5\uff1a<\/p>\n<\/p>\n

1\u3001\u4f7f\u7528f-string<\/h4>\n<\/p>\n

\u4ecePython 3.6\u5f00\u59cb\uff0cf-string\uff08\u683c\u5f0f\u5316\u5b57\u7b26\u4e32\u5b57\u9762\u91cf\uff09\u88ab\u5f15\u5165\uff0c\u8fd9\u4f7f\u5f97\u5b57\u7b26\u4e32\u683c\u5f0f\u5316\u53d8\u5f97\u66f4\u52a0\u76f4\u89c2\u548c\u7b80\u6d01\u3002\u4ee5\u4e0b\u662f\u4f7f\u7528f-string\u6765\u4fdd\u7559\u4e00\u4f4d\u5c0f\u6570\u7684\u793a\u4f8b\uff1a<\/p>\n<\/p>\n

number = 3.14159<\/p>\n
formatted_number = f"{number:.1f}"<\/p>\n
print(formatted_number)  # \u8f93\u51fa\uff1a3.1<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528f-string\u5c06number<\/code>\u683c\u5f0f\u5316\u4e3a\u53ea\u4fdd\u7559\u4e00\u4f4d\u5c0f\u6570\u7684\u5b57\u7b26\u4e32\uff0c\u5e76\u5c06\u7ed3\u679c\u8d4b\u503c\u7ed9formatted_number<\/code>\u3002{number:.1f}<\/code>\u4e2d\u7684.1f<\/code>\u8868\u793a\u4fdd\u7559\u4e00\u4f4d\u5c0f\u6570\u3002<\/p>\n<\/p>\n
2\u3001\u4f7f\u7528format()\u65b9\u6cd5<\/h4>\n<\/p>\n
format()<\/code>\u65b9\u6cd5\u662fPython 2.7\u53ca\u4ee5\u4e0a\u7248\u672c\u4e2d\u63d0\u4f9b\u7684\u53e6\u4e00\u79cd\u683c\u5f0f\u5316\u5b57\u7b26\u4e32\u7684\u65b9\u6cd5\uff0c\u4e5f\u53ef\u4ee5\u7528\u4e8e\u63a7\u5236\u6d6e\u70b9\u6570\u7684\u663e\u793a\u7cbe\u5ea6\u3002\u4ee5\u4e0b\u662f\u4f7f\u7528format()<\/code>\u65b9\u6cd5\u6765\u4fdd\u7559\u4e00\u4f4d\u5c0f\u6570\u7684\u793a\u4f8b\uff1a<\/p>\n<\/p>\n
number = 3.14159<\/p>\n
formatted_number = "{:.1f}".format(number)<\/p>\n
print(formatted_number)  # \u8f93\u51fa\uff1a3.1<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528"{:.1f}".format(number)<\/code>\u5c06number<\/code>\u683c\u5f0f\u5316\u4e3a\u53ea\u4fdd\u7559\u4e00\u4f4d\u5c0f\u6570\u7684\u5b57\u7b26\u4e32\uff0c\u5e76\u5c06\u7ed3\u679c\u8d4b\u503c\u7ed9formatted_number<\/code>\u3002<\/p>\n<\/p>\n
\u4e8c\u3001\u4f7f\u7528round()\u51fd\u6570<\/h3>\n<\/p>\n
round()<\/code>\u51fd\u6570\u662fPython\u5185\u7f6e\u7684\u4e00\u4e2a\u7528\u4e8e\u5bf9\u6d6e\u70b9\u6570\u8fdb\u884c\u56db\u820d\u4e94\u5165\u64cd\u4f5c\u7684\u51fd\u6570\uff0c\u53ef\u4ee5\u6307\u5b9a\u4fdd\u7559\u7684\u5c0f\u6570\u4f4d\u6570\u3002\u4ee5\u4e0b\u662f\u4f7f\u7528round()<\/code>\u51fd\u6570\u6765\u4fdd\u7559\u4e00\u4f4d\u5c0f\u6570\u7684\u793a\u4f8b\uff1a<\/p>\n<\/p>\n
number = 3.14159<\/p>\n
rounded_number = round(number, 1)<\/p>\n
print(rounded_number)  # \u8f93\u51fa\uff1a3.1<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528round(number, 1)<\/code>\u5c06number<\/code>\u56db\u820d\u4e94\u5165\u5230\u4e00\u4f4d\u5c0f\u6570\uff0c\u5e76\u5c06\u7ed3\u679c\u8d4b\u503c\u7ed9rounded_number<\/code>\u30021<\/code>\u8868\u793a\u4fdd\u7559\u4e00\u4f4d\u5c0f\u6570\u3002<\/p>\n<\/p>\n
\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0cround()<\/code>\u51fd\u6570\u8fd4\u56de\u7684\u662f\u6d6e\u70b9\u6570\u800c\u4e0d\u662f\u5b57\u7b26\u4e32\u3002\u5982\u679c\u4f60\u9700\u8981\u5c06\u7ed3\u679c\u683c\u5f0f\u5316\u4e3a\u5b57\u7b26\u4e32\uff0c\u53ef\u4ee5\u7ed3\u5408\u683c\u5f0f\u5316\u5b57\u7b26\u4e32\u65b9\u6cd5\u4e00\u8d77\u4f7f\u7528\uff1a<\/p>\n<\/p>\n
number = 3.14159<\/p>\n
rounded_number = round(number, 1)<\/p>\n
formatted_number = f"{rounded_number:.1f}"<\/p>\n
print(formatted_number)  # \u8f93\u51fa\uff1a3.1<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u4e09\u3001\u4f7f\u7528decimal\u6a21\u5757<\/h3>\n<\/p>\n
decimal<\/code>\u6a21\u5757\u63d0\u4f9b\u4e86\u9ad8\u7cbe\u5ea6\u7684\u6d6e\u70b9\u6570\u8fd0\u7b97\u529f\u80fd\uff0c\u53ef\u4ee5\u7528\u4e8e\u9700\u8981\u9ad8\u7cbe\u5ea6\u63a7\u5236\u7684\u573a\u666f\u3002\u901a\u8fc7decimal<\/code>\u6a21\u5757\uff0c\u6211\u4eec\u53ef\u4ee5\u66f4\u7cbe\u786e\u5730\u63a7\u5236\u6d6e\u70b9\u6570\u7684\u663e\u793a\u7cbe\u5ea6\u3002\u4ee5\u4e0b\u662f\u4f7f\u7528decimal<\/code>\u6a21\u5757\u6765\u4fdd\u7559\u4e00\u4f4d\u5c0f\u6570\u7684\u793a\u4f8b\uff1a<\/p>\n<\/p>\n
from decimal import Decimal, ROUND_HALF_UP<\/p>\n
number = Decimal('3.14159')<\/p>\n
rounded_number = number.quantize(Decimal('0.1'), rounding=ROUND_HALF_UP)<\/p>\n
print(rounded_number)  # \u8f93\u51fa\uff1a3.1<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u9996\u5148\u5c06number<\/code>\u8f6c\u6362\u4e3aDecimal<\/code>\u5bf9\u8c61\uff0c\u7136\u540e\u4f7f\u7528quantize()<\/code>\u65b9\u6cd5\u5c06\u5176\u56db\u820d\u4e94\u5165\u5230\u4e00\u4f4d\u5c0f\u6570\uff0c\u5e76\u6307\u5b9a\u820d\u5165\u65b9\u5f0f\u4e3aROUND_HALF_UP<\/code>\u3002<\/p>\n<\/p>\n
1\u3001\u63a7\u5236\u7cbe\u5ea6<\/h4>\n<\/p>\n
decimal<\/code>\u6a21\u5757\u53ef\u4ee5\u7cbe\u786e\u63a7\u5236\u6d6e\u70b9\u6570\u7684\u7cbe\u5ea6\uff0c\u8fd9\u5728\u5904\u7406\u91d1\u878d\u6570\u636e\u7b49\u9700\u8981\u9ad8\u7cbe\u5ea6\u8ba1\u7b97\u7684\u573a\u666f\u4e2d\u5c24\u4e3a\u91cd\u8981\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u793a\u4f8b\uff1a<\/p>\n<\/p>\n
from decimal import Decimal<\/p>\n
number = Decimal('3.14159')<\/p>\n
\u8bbe\u7f6e\u5168\u5c40\u7cbe\u5ea6<\/strong><\/h2>\n
import decimal<\/p>\n
decimal.getcontext().prec = 2<\/p>\n
print(number)  # \u8f93\u51fa\uff1a3.1<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u901a\u8fc7decimal.getcontext().prec<\/code>\u8bbe\u7f6e\u5168\u5c40\u7cbe\u5ea6\u4e3a2\uff0c\u7136\u540e\u6253\u5370\u7ed3\u679c\u3002<\/p>\n<\/p>\n
2\u3001\u820d\u5165\u6a21\u5f0f<\/h4>\n<\/p>\n
decimal<\/code>\u6a21\u5757\u63d0\u4f9b\u4e86\u591a\u79cd\u820d\u5165\u6a21\u5f0f\uff0c\u5982ROUND_HALF_UP<\/code>\u3001ROUND_HALF_DOWN<\/code>\u3001ROUND_CEILING<\/code>\u7b49\u3002\u4f60\u53ef\u4ee5\u6839\u636e\u5177\u4f53\u9700\u6c42\u9009\u62e9\u5408\u9002\u7684\u820d\u5165\u6a21\u5f0f\u3002\u4ee5\u4e0b\u662f\u51e0\u4e2a\u5e38\u7528\u820d\u5165\u6a21\u5f0f\u7684\u793a\u4f8b\uff1a<\/p>\n<\/p>\n
from decimal import Decimal, ROUND_HALF_UP, ROUND_HALF_DOWN, ROUND_CEILING<\/p>\n
number = Decimal('3.14159')<\/p>\n
\u56db\u820d\u4e94\u5165<\/strong><\/h2>\n
rounded_number = number.quantize(Decimal('0.1'), rounding=ROUND_HALF_UP)<\/p>\n
print(rounded_number)  # \u8f93\u51fa\uff1a3.1<\/p>\n
\u4e94\u820d\u516d\u5165<\/strong><\/h2>\n
rounded_number = number.quantize(Decimal('0.1'), rounding=ROUND_HALF_DOWN)<\/p>\n
print(rounded_number)  # \u8f93\u51fa\uff1a3.1<\/p>\n
\u5411\u4e0a\u820d\u5165<\/strong><\/h2>\n
rounded_number = number.quantize(Decimal('0.1'), rounding=ROUND_CEILING)<\/p>\n
print(rounded_number)  # \u8f93\u51fa\uff1a3.2<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u5206\u522b\u6f14\u793a\u4e86ROUND_HALF_UP<\/code>\u3001ROUND_HALF_DOWN<\/code>\u548cROUND_CEILING<\/code>\u4e09\u79cd\u820d\u5165\u6a21\u5f0f\u7684\u6548\u679c\u3002<\/p>\n<\/p>\n
\u56db\u3001\u4f7f\u7528\u81ea\u5b9a\u4e49\u51fd\u6570<\/h3>\n<\/p>\n
\u6709\u65f6\u4f60\u53ef\u80fd\u5e0c\u671b\u5b9a\u4e49\u4e00\u4e2a\u81ea\u5b9a\u4e49\u51fd\u6570\u6765\u7edf\u4e00\u5904\u7406\u4fdd\u7559\u4e00\u4f4d\u5c0f\u6570\u7684\u64cd\u4f5c\uff0c\u4ee5\u4fbf\u5728\u9879\u76ee\u4e2d\u91cd\u590d\u4f7f\u7528\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u793a\u4f8b\uff1a<\/p>\n<\/p>\n
def format_to_one_decimal_place(number):<\/p>\n
    return f"{number:.1f}"<\/p>\n
\u793a\u4f8b<\/strong><\/h2>\n
number = 3.14159<\/p>\n
formatted_number = format_to_one_decimal_place(number)<\/p>\n
print(formatted_number)  # \u8f93\u51fa\uff1a3.1<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u5b9a\u4e49\u4e86\u4e00\u4e2a\u540d\u4e3aformat_to_one_decimal_place<\/code>\u7684\u81ea\u5b9a\u4e49\u51fd\u6570\uff0c\u8be5\u51fd\u6570\u4f7f\u7528f-string\u5c06\u8f93\u5165\u7684\u6d6e\u70b9\u6570\u683c\u5f0f\u5316\u4e3a\u53ea\u4fdd\u7559\u4e00\u4f4d\u5c0f\u6570\u7684\u5b57\u7b26\u4e32\u3002<\/p>\n<\/p>\n
1\u3001\u5904\u7406\u591a\u79cd\u8f93\u5165\u7c7b\u578b<\/h4>\n<\/p>\n
\u4e3a\u4e86\u8ba9\u81ea\u5b9a\u4e49\u51fd\u6570\u66f4\u52a0\u901a\u7528\uff0c\u6211\u4eec\u53ef\u4ee5\u6269\u5c55\u5b83\u4ee5\u5904\u7406\u591a\u79cd\u8f93\u5165\u7c7b\u578b\uff0c\u5982\u6574\u6570\u3001\u6d6e\u70b9\u6570\u548c\u5b57\u7b26\u4e32\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u793a\u4f8b\uff1a<\/p>\n<\/p>\n
def format_to_one_decimal_place(number):<\/p>\n
    if isinstance(number, (int, float)):<\/p>\n
        return f"{number:.1f}"<\/p>\n
    elif isinstance(number, str):<\/p>\n
        try:<\/p>\n
            number = float(number)<\/p>\n
            return f"{number:.1f}"<\/p>\n
        except ValueError:<\/p>\n
            rAI<\/a>se ValueError("\u8f93\u5165\u7684\u5b57\u7b26\u4e32\u65e0\u6cd5\u8f6c\u6362\u4e3a\u6d6e\u70b9\u6570")<\/p>\n
    else:<\/p>\n
        raise TypeError("\u8f93\u5165\u7c7b\u578b\u5fc5\u987b\u4e3a\u6574\u6570\u3001\u6d6e\u70b9\u6570\u6216\u5b57\u7b26\u4e32")<\/p>\n
\u793a\u4f8b<\/strong><\/h2>\n
print(format_to_one_decimal_place(3.14159))  # \u8f93\u51fa\uff1a3.1<\/p>\n
print(format_to_one_decimal_place(3))        # \u8f93\u51fa\uff1a3.0<\/p>\n
print(format_to_one_decimal_place("3.14159"))# \u8f93\u51fa\uff1a3.1<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u6269\u5c55\u4e86format_to_one_decimal_place<\/code>\u51fd\u6570\uff0c\u4f7f\u5176\u80fd\u591f\u5904\u7406\u6574\u6570\u3001\u6d6e\u70b9\u6570\u548c\u5b57\u7b26\u4e32\u4e09\u79cd\u8f93\u5165\u7c7b\u578b\u3002<\/p>\n<\/p>\n
2\u3001\u5904\u7406\u5f02\u5e38\u60c5\u51b5<\/h4>\n<\/p>\n
\u5728\u5b9e\u9645\u4f7f\u7528\u4e2d\uff0c\u8f93\u5165\u6570\u636e\u53ef\u80fd\u5305\u542b\u5f02\u5e38\u60c5\u51b5\uff0c\u5982\u65e0\u6548\u7684\u5b57\u7b26\u4e32\u6216\u4e0d\u652f\u6301\u7684\u7c7b\u578b\u3002\u6211\u4eec\u53ef\u4ee5\u5728\u81ea\u5b9a\u4e49\u51fd\u6570\u4e2d\u6dfb\u52a0\u5f02\u5e38\u5904\u7406\u903b\u8f91\uff0c\u4ee5\u63d0\u9ad8\u51fd\u6570\u7684\u9c81\u68d2\u6027\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u793a\u4f8b\uff1a<\/p>\n<\/p>\n
def format_to_one_decimal_place(number):<\/p>\n
    try:<\/p>\n
        if isinstance(number, (int, float)):<\/p>\n
            return f"{number:.1f}"<\/p>\n
        elif isinstance(number, str):<\/p>\n
            number = float(number)<\/p>\n
            return f"{number:.1f}"<\/p>\n
        else:<\/p>\n
            raise TypeError("\u8f93\u5165\u7c7b\u578b\u5fc5\u987b\u4e3a\u6574\u6570\u3001\u6d6e\u70b9\u6570\u6216\u5b57\u7b26\u4e32")<\/p>\n
    except ValueError:<\/p>\n
        raise ValueError("\u8f93\u5165\u7684\u5b57\u7b26\u4e32\u65e0\u6cd5\u8f6c\u6362\u4e3a\u6d6e\u70b9\u6570")<\/p>\n
\u793a\u4f8b<\/strong><\/h2>\n
try:<\/p>\n
    print(format_to_one_decimal_place("abc"))  # \u629b\u51fa\u5f02\u5e38\uff1aValueError: \u8f93\u5165\u7684\u5b57\u7b26\u4e32\u65e0\u6cd5\u8f6c\u6362\u4e3a\u6d6e\u70b9\u6570<\/p>\n
except ValueError as e:<\/p>\n
    print(e)<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u5728format_to_one_decimal_place<\/code>\u51fd\u6570\u4e2d\u6dfb\u52a0\u4e86\u5f02\u5e38\u5904\u7406\u903b\u8f91\uff0c\u4ee5\u5904\u7406\u65e0\u6548\u7684\u5b57\u7b26\u4e32\u8f93\u5165\u3002<\/p>\n<\/p>\n
\u4e94\u3001\u603b\u7ed3<\/h3>\n<\/p>\n
\u5728Python\u4e2d\uff0c\u6709\u591a\u79cd\u65b9\u6cd5\u53ef\u4ee5\u7528\u6765\u4fdd\u7559\u4e00\u4f4d\u5c0f\u6570\uff0c\u5305\u62ec\u683c\u5f0f\u5316\u5b57\u7b26\u4e32\u3001round()<\/code>\u51fd\u6570\u3001decimal<\/code>\u6a21\u5757\u4ee5\u53ca\u81ea\u5b9a\u4e49\u51fd\u6570\u3002\u6bcf\u79cd\u65b9\u6cd5\u90fd\u6709\u5176\u9002\u7528\u7684\u573a\u666f\u548c\u4f18\u7f3a\u70b9\uff1a<\/p>\n<\/p>\n
    \n
  1. \u683c\u5f0f\u5316\u5b57\u7b26\u4e32<\/strong>\uff1a\u7b80\u5355\u6613\u7528\uff0c\u9002\u7528\u4e8e\u5927\u591a\u6570\u573a\u666f\u3002<\/li>\n
  2. round()\u51fd\u6570<\/strong>\uff1a\u5185\u7f6e\u51fd\u6570\uff0c\u64cd\u4f5c\u7b80\u4fbf\uff0c\u4f46\u8fd4\u56de\u6d6e\u70b9\u6570\u3002<\/li>\n
  3. decimal\u6a21\u5757<\/strong>\uff1a\u9ad8\u7cbe\u5ea6\u63a7\u5236\uff0c\u9002\u7528\u4e8e\u9700\u8981\u9ad8\u7cbe\u5ea6\u8ba1\u7b97\u7684\u573a\u666f\u3002<\/li>\n
  4. \u81ea\u5b9a\u4e49\u51fd\u6570<\/strong>\uff1a\u7075\u6d3b\u53ef\u6269\u5c55\uff0c\u9002\u7528\u4e8e\u9700\u8981\u7edf\u4e00\u5904\u7406\u4fdd\u7559\u5c0f\u6570\u4f4d\u6570\u7684\u9879\u76ee\u3002<\/li>\n<\/ol>\n
    \u4f60\u53ef\u4ee5\u6839\u636e\u5177\u4f53\u9700\u6c42\u9009\u62e9\u5408\u9002\u7684\u65b9\u6cd5\u6765\u4fdd\u7559\u4e00\u4f4d\u5c0f\u6570\u3002\u901a\u8fc7\u638c\u63e1\u8fd9\u4e9b\u65b9\u6cd5\uff0c\u4f60\u5c06\u80fd\u591f\u66f4\u597d\u5730\u63a7\u5236\u6d6e\u70b9\u6570\u7684\u663e\u793a\u7cbe\u5ea6\uff0c\u4ee5\u6ee1\u8db3\u4e0d\u540c\u573a\u666f\u7684\u9700\u6c42\u3002<\/p>\n<\/p>\n
    \u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n
     \u5982\u4f55\u5728Python\u4e2d\u5c06\u6d6e\u70b9\u6570\u683c\u5f0f\u5316\u4e3a\u4e00\u4f4d\u5c0f\u6570\uff1f<\/strong>
    \u5728Python\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528\u5185\u7f6e\u7684round()<\/code>\u51fd\u6570\u6765\u5c06\u6d6e\u70b9\u6570\u56db\u820d\u4e94\u5165\u5230\u6307\u5b9a\u7684\u5c0f\u6570\u4f4d\u6570\u3002\u4f7f\u7528\u65b9\u6cd5\u662fround(\u6570\u503c, 1)<\/code>\uff0c\u5176\u4e2d1<\/code>\u8868\u793a\u4fdd\u7559\u4e00\u4f4d\u5c0f\u6570\u3002\u4f8b\u5982\uff0cround(3.14159, 1)<\/code>\u5c06\u8fd4\u56de3.1<\/code>\u3002\u6b64\u5916\uff0c\u8fd8\u53ef\u4ee5\u4f7f\u7528\u683c\u5f0f\u5316\u5b57\u7b26\u4e32\uff0c\u5982f"{\u6570\u503c:.1f}"<\/code>\u6765\u8f93\u51fa\u4e00\u4f4d\u5c0f\u6570\uff0c\u4f8b\u5982f"{3.14159:.1f}"<\/code>\u540c\u6837\u4f1a\u5f97\u52303.1<\/code>\u3002<\/p>\n
    \u5728Python\u4e2d\u5982\u4f55\u5904\u7406\u5c0f\u6570\u7cbe\u5ea6\u95ee\u9898\uff1f<\/strong>
    \u5904\u7406\u5c0f\u6570\u7cbe\u5ea6\u95ee\u9898\u65f6\uff0c\u53ef\u4ee5\u4f7f\u7528decimal<\/code>\u6a21\u5757\uff0c\u8fd9\u4e2a\u6a21\u5757\u63d0\u4f9b\u4e86\u66f4\u9ad8\u7cbe\u5ea6\u7684\u6d6e\u70b9\u6570\u8fd0\u7b97\u3002\u4f7f\u7528\u65b9\u6cd5\u662f\u5148\u5bfc\u5165\u6a21\u5757\uff0c\u7136\u540e\u521b\u5efa\u4e00\u4e2aDecimal<\/code>\u5bf9\u8c61\uff0c\u4f8b\u5982from decimal import Decimal<\/code>\uff0cDecimal('3.14159').quantize(Decimal('0.0'))<\/code>\u5c06\u8fd4\u56de3.1<\/code>\u3002\u8fd9\u79cd\u65b9\u6cd5\u53ef\u4ee5\u6709\u6548\u907f\u514d\u6d6e\u70b9\u6570\u8fd0\u7b97\u4e2d\u5e38\u89c1\u7684\u7cbe\u5ea6\u4e22\u5931\u95ee\u9898\u3002<\/p>\n
    \u662f\u5426\u53ef\u4ee5\u901a\u8fc7\u5b57\u7b26\u4e32\u64cd\u4f5c\u6765\u4fdd\u7559\u4e00\u4f4d\u5c0f\u6570\uff1f<\/strong>
    \u662f\u7684\uff0c\u53ef\u4ee5\u901a\u8fc7\u5b57\u7b26\u4e32\u64cd\u4f5c\u6765\u5b9e\u73b0\u4fdd\u7559\u4e00\u4f4d\u5c0f\u6570\u3002\u5c06\u6d6e\u70b9\u6570\u8f6c\u6362\u4e3a\u5b57\u7b26\u4e32\u540e\uff0c\u53ef\u4ee5\u4f7f\u7528\u5b57\u7b26\u4e32\u7684\u5207\u7247\u529f\u80fd\u6765\u622a\u53d6\u5c0f\u6570\u90e8\u5206\u3002\u4f8b\u5982\uff0c\u5c063.14159<\/code>\u8f6c\u6362\u4e3a\u5b57\u7b26\u4e32\u540e\uff0c\u53ef\u4ee5\u4f7f\u7528str(\u6570\u503c)[:4]<\/code>\u6765\u83b7\u53d6\u4fdd\u7559\u4e00\u4f4d\u5c0f\u6570\u7684\u7ed3\u679c'3.1'<\/code>\u3002\u4e0d\u8fc7\uff0c\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u8fd9\u79cd\u65b9\u6cd5\u53ea\u662f\u5bf9\u663e\u793a\u6548\u679c\u8fdb\u884c\u8c03\u6574\uff0c\u5e76\u4e0d\u4f1a\u6539\u53d8\u539f\u59cb\u6570\u636e\u7684\u6570\u503c\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"\u5728Python\u4e2d\uff0c\u53ef\u4ee5\u901a\u8fc7\u4f7f\u7528\u591a\u79cd\u65b9\u6cd5\u6765\u53ea\u4fdd\u7559\u4e00\u4f4d\u5c0f\u6570\uff1a\u683c\u5f0f\u5316\u5b57\u7b26\u4e32\u3001round()\u51fd\u6570\u3001decimal\u6a21\u5757\u3002 […]","protected":false},"author":3,"featured_media":1105695,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[37],"tags":[],"acf":[],"_links":{"self":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1105682"}],"collection":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/comments?post=1105682"}],"version-history":[{"count":"1","href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1105682\/revisions"}],"predecessor-version":[{"id":1105698,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1105682\/revisions\/1105698"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/1105695"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=1105682"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=1105682"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=1105682"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}